[epiphany] help: Correct style of a button

[Andre Klapper <aklapper src gnome org>]

commit cacb6fa3a083b173c1e427bab0f60c2382ab02e5
Author: Andre Klapper <a9016009 gmx de>
Date:   Tue Aug 10 12:20:57 2021 +0200

    help: Correct style of a button

 help/C/history-delete.page | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/history-delete.page b/help/C/history-delete.page
index 07e0245be..ec167e000 100644
--- a/help/C/history-delete.page
+++ b/help/C/history-delete.page
@@ -41,7 +41,7 @@
     </item>
   </steps>
 
-  <p>You can also delete all of your history by selecting
-  <gui style="menuitem">Clear all</gui>.</p>
+  <p>You can also delete all of your history by pressing
+  <gui style="button">Clear all</gui>.</p>
 
 </page>